Their mother Tatiana Meakens, 23, and aunt Britany Meakens, 22, were each charged with two counts of felony for endangering a child causing death and two counts of misdemeanor for endangering the life and health of a child, according to a press release from police News Affairs.

Both were called in for questioning after police discovered the two had left four children alone to attend a party, police said.

The two children who survived, a 7-year-old boy and a 4-year-old boy, were taken into the custody of Illinois Department of Children and Family Services, while authorities conducted their investigation.

Saturday night, friends, neighbors and members of the community mourned the loss of the two toddlers with a vigil and balloon release.